Saw-swaging machine.



W. L.'COVEL.

SAW SWAGING MACHINE.

APPLICATION FILED AUG. 2, 1907.

934,046. Patented Sept. 14.1909.

4 SHEETSSHEET 1.

'W'Hn sses 3% r L I 'hfm'anluen Gael ANDREW. a. GRAHAM um PNOYO-U1NDGRAPNERS. v-imGYoN, u c.

W. L. covnL SAW SWAGING MACHINE; APPLIOATION FILED AUG. 2, 1907.

934,046.- Patented Sept. 14,1909.-

4 SHEETS-SHEET 2.

INVENTQR- W. L. GOVEL. SAW SWAGING MACHINE.

APPLICATION FILED AUG. 2, 1907.

Patented Sept, 14, 1909.

4 SHEETS-SHEET a.

FIG. 14

INVENTOR Mi li); 112LanL0l1hw! V m m.

ANDREW. a emu! cm vuow-umoamwzns. WASHINGTON. v c.

W. L. GOV EL. SAW SWAGING MACHINE.

APPLICATION FILED AUG. 2, 1907.

Patented Se t. 14,1909.

4 SHEETS-SHEET 4.

5 IlI/////l WILLIAM LANDON COVEL, OF BILOXI, MISSISSIPPI.

SAW-SWAGING MACHINE.

Specification of: Letters Patent. Patented Sept, 14 9{)9 Application filed. August 2, 1907. Serial No. 386,833.

To all whom it may concern.

Be it known that I, IVILLIAM LANDON CovnL, of Biloxi, in the county of Harrison and State of Mississippi, have invented certain new and useful Improvements in Saw- Swaging Machines, of which the following is a specification.

This invention relates to certain improvements in saw swaging machines and more particularly in the machine shown in my Letters Patent No. 815,269 granted March 13, 1906. I

The invention consists in the machine shown, in its preferable embodiment, in the drawings accompanying and forming part hereof and as will now be hereinafter more particularly described and then definitely claimed at the end hereof.

In the aforesaid drawings which represent the way I now prefer to carry out my invention: Figure 1 is a front elevation of my machine, with parts removed in order to better show the construction. Fig. 2 is a top plan with parts removed. Fig. 3 is a vertical central section taken on a line running through the main shaft. Fig. 4 is a detail showing the manner of clamping the saws. Figs. 5 and (3 are details of the face plate. Fig. 7 is a plan of a supporting bar. Fig. 8 shows the various forms of swaging rollers. Figs. 9 and 10 are detail views of the swaging head. Fig. 11 is a detail of the stirrup for engaging the supporting bar shown in .Fig. 7. Figs. 12 and 13 are details of the feed rod. Fig. 14 is a detail of one of the cams and its connected parts operated thereby.

lxeferrin'gnow to the details of the drawings by numerals: 1 designates a suitable base or support to which is secured the standard 2 in any desired manner but preferably by means of the screw threaded an nular flange shown in Figs. 1 and 3. To the upper part of the standard 2 is secured a table 3 which carries or supports all the material parts of the machine and to which is secured a vertically disposed plate 4 by means of the bolts 1 shown in Fig. 1. I To the table 3 ing a bearing 36 and within this bearing 36 is supported the main shaft the other end of which is supported by the enlarged part l of theplate 41-. This plate etalso extendsabove the shaft as shown at at and instead of babbitting, the upper part of the bearing is formed by means of a portion 1 shown is also bolted an upright formparticularly in Fig. 3 and which is adjustably secured in position by means of the bolt 4* shown in the same figure and also in Fig. 1. The main shaft 30 is driven in a somewhat similar manner to that illustrated in my aforesaid Patent No. 815,269 in that it has secured to it a worm wheel 37 which is operated by a worm 38 driven from the shaft 40 by means of the pulleys 39 (see F 2 and 3). At the opposite end of this shaft 30 is secured the swaging head 31 which while operating on the same general principle as that shown in my aforesaid patent is entirely different in its details and this head will be hereinafter more particularly described.

The plate 1 is provided with a vertical slot 1 to provide for vertical movement therein of two adjusting bolts 5 which project through the'aforesaid slot into the saw carrier 5 shown particularly in Figs. 1 and 3. This carrier rests upon a supporting bar 6 shown in detail in Fig. 7 and in position in Fig. l, and the supporting bar has one end which may be quickly adjusted as desired by hookinga stud orrivet 6 at one of its ends into one of the slots 25 in the vertically disposed support 25 which is bolted to the base 1 and to the vertical plate 4t, as clearly illustrated in Fig. 1. The other end of the supporting bar 6 is hooked into a stirrup 26 shown in Fig. 11 and which stirrup is provided with a; threaded nut 27 with which engages the vertically disposed adjusting screw 7 which is stepped into the base 1 and which is provided at the upper end with a cranked handle 28 by means of which it may be easily adjusted in a manner readily understood. From the foregoing itwill be seen that since the saw support 5 rests on the supporting bar (3 and is adjustable up and down by means of its bolts 5 in the slots 4?, the said saw support 5 may be rapidly adjusted in approximately the proper position by hooking the studs or bolts 6 into that one of the slots 25 in the bar 25 which seems to be the appropriate one. And then the fine adjustment may be made from the other end of the supporting bar 6 by turning the cranked handle 28 and moving the bar 6 upwardly, and with it the saw support 5, until the saw is adjusted to a nicety. Before leaving the saw support, I may further state that the said support is provided with turning buttons 5' shown in Figs. 1 and 3, these buttons being so disposed that after the saw is placed upon "may be turned so as to be vertically disposed and hold the saw from slipping off sidewise.

lVhen the teeth of a band saw are to be swaged, the saw is supported upon the supports 5, but when a circular saw is to have its teeth swaged, the saw may be secured directly to the supporting bar 6 by slipping it over a circular boss 6 shown in Figs. 1 and 3 and by properly adjusting the bar 6 the teeth of the saw may be brought into proper position for swaging.

7 After the saw is properly placed in position on the supports 5 projecting from the carrier 5, or if, a circular saw is being swaged upon the support 6?", it is advisable to provide some means of clamping the saw during the swaging operation and I prefer to employ clamps like those shown at 19 and 19 in Fig. 4. The clamp 19 is movably secured in position, one end being supported by means of the bolt20 provided under its head with a rubber gasket 20 so asto permit movement of the clamp 19? in a man ner which will be hereinafter described. The other clamp 19 is secured to a removable face plate 33 (which will also be hereinafter more fully described) by means ofthe bolts 19 and 19. The bolts 19 'areloo'sely slipped through the face plate 33; and threaded into the clamp 19 while the bolt l9 is screwed in the face plate 33 and against the clamp 19% this arrangement permitting the clamp 19 to be. adjusted to or from the face plate 33 n a manner readily understood and as oocasion requires. The clamps 19? and 19 are provided with removable clamping jaws 19 shown in Fig. 4 and also in Figs. 1, 3 and" 6. V The face plate 33 which has been several times mentioned is formed of the construc tion shown particularly in Figs. 5 and 6 and from the examination of'Fig. 5 it will be seen that this plate is roughly speaking of U shape and the two vertical members of the U are provided with. slots 33 through which project bolts 33 (see Fig. 2) which project from the vertically disposed plate 41 and the face plate is locked to these bolts by means of the locking handles 31'shown in Figsk2,

o and 6. The face plate 33 is made of the peculiar shape shown in Fig. 5 so that it may be slipped upwardly in position, the project; ing part ofthe swaging head fitting within the vertically disposed slot in the face plate and when the face plate is in the proper positionvertically, it is then moved horizontally, until the horizontal slots 33 contain the bolts 33 when thelocking handles 341 may be turned to clamp the face plate in position. And since one of the clamps 19 is bolted to the face plate 33 it follows that this clamp is'also placedin position at the same time that the face plate 33 is placed on the machine.

It has been hereinbefore stated that the aforesaidpatent.

clamp 19 is movably held in position and that one end is supported by means of the bolt 20 so as to permit a slight movement thereon owing to the employment of the "rubber gasket 20. To give this clamp 19 an automatic movement to clamp or release the saw, I connect it to a cam lever 24 by means of a rod 2 1? one end of which is pivoted to the cam lever 241 and the other end adj ustably connected to the clamp by means of the screw thread end of the rod 24* and the adjusting nut 24". It follows fromrthis construction that the clamp may be adjusted as nicely as may be necessary in order to insure the proper clamping of the saw in the manner which Wlll be fully described in the operation of the machine. The cam lever 24 is pivotallyconnected at 24 to the table 3 and its other end is provided with a roller which contacts with the cam secured to the main shaft30. This cam 35 is so formed that when the roller of the cam lever 24.

bears on the fiat face of the cam it is held in the position shown in Fig. 3 but when the cam rotates to the point where it will slip off of the end ofthe can-i (see Fig-71 1), the cam lever 24 is permitted to move to the left as shown in- Fig.2 and thereby will permit the clamp 19? to release the saw which is being held between the clam'pslt) and 19 the shaft continues to rotateat the proper time theroller 24 011 the end of the cam lever 24 will be picked up by the curved end of the cam 35'and graduallymoved-to the rightas shown in Fig. 2 and again clamp the saw. in position, 1

In'order to feed the sawone' tooth at a time 7 after it has been releasedfrom the clamps as has just been described, I employ a feed "rod 18 quite-similar to the feed rod .of my This rodlis; shown detached in Figs. 12 and 13 and is'sho'wn in position in Fig. 1 and as there shown it is connected to the upright 15. .pivotally connected to'the main plate e on the pivot 17, the upright 15 having an arm 16 supporting a weight 16 which tends-to move the'aforesaid upright to the left as seen in Fig. l.

The said feed rod 13 may be secured in position in any one of the openings 15 in up right 15, that fopening being used which places it in better position for the particular work being done. And the feed rod is made detachable as shown in Fig. 12 and'has its end of anvilshape witha peculiarly shaped recess 18*" which is of the shape to which'it isdesired to swage the saw teeth. By removing the cotter 13*, the feed rod 18 may be removed in order that anotherar'm with a different shape of recess 18, maybe substituted. To give movement to feed rod 18 to automatically feed the saw, tooth; by tooth,v I connect upright 15 with a cam lever 8,. pivoted at 8, by means of an adjusting rod 10 which passes through a support 12 con nected to the upright 15 by means of pivots 11 and the support 12 may thus move. as occasion requires. A rod 10 is also adjustable by means of a thumb nut- 13 and the feed rod 18 may be moved so that its slotted end will be in the proper position to be used as an anvil in swaging the saw teeth. T o give vertical adjustment to the anvil end of rod 18, I support this anvil end upon the clamps 19 and 19 (see Figs. 1 and 3) and I employ a wedge 21 under the clamp 19 and by driving this wedge to the left as shown in Fig. 1 the clamp 19 may be slightly elevated, the slot through which the bolt 20 projects, permitting this movement. Similar movements may be given to the clamp 19 by means of the adjusting screw 19 shown in Fig. 3.-

The cam lever S which has been referred to as being connected to the rod 10 and pivotally supported at the point 8, is provided with a cam roller 9 which engages the cam 32 secured to the main shaft 30 as clearly seen in Fig. 3, this cam being also shown in Figs. 1 and 2. The cam so formed that when the parts are in the position shown in Fig. 1 the roller 9 is at the outward movement of its stroke thus holding the bar 15 in the upright position shown in Fig. 1. But atthe time when the shaft 30 moves the cam 32 so that the cam roller 9 is permitted to slide inwardly, the weight 16 on the arm 16 of the upright 15 moves said upright on the pivot 17 to the left in Fig. 1 which causes the feed rod 18'to also be moved to the left thus bringing its anvil shaped end over the point of the next tooth of the saw. lVhen during the operation of the machine, the cam roller 9 is again forced outwardly as the cam rolls under it, the cam lever is again moved to the position shown in Fig. 1 thus directing the upright 15, through the rod 10, to the upright position and causing the feed rod, 18 to shove the next tooth of thesaw into position to be swaged.

Having described the various parts of the machine, the manner in which the saw is clamped in position and the way it is fed toot-h by tooth, I will now describe the head for swaging the teeth. This swaging head is shown in position on the machine in Figs. 1 and 3 and is shown in detail in Figs. 9 and 10 and the swaging elements are shown in Fig. 8. On the end of the main shaft 30 is secured a ring or barrel 31, and to this barrel or drum 31 are secured the side plates 29 which are curved inwardly toward each other as shown particularly in Fig. 9 for the purpose of retaining the ball 0 in position. It will be understood that there are three rollers a, b and (Z which are journaled in the plates 29 and a ball 0 which is simply retained in position by the inwardly curved parts of said plates 29. These rollers act progressively on each tooth, roller a swaging it first slightly, roller 1) increasing the work, ball 0 still further swaging the tooth and then the specially formed roller (Z swages the tooth to the exact shape desired. It is desirable that these rollers shall not be fixedly secured to the shaft 30 but shall have a yielding connection therewith and I accomplish this by connecting the plates 29 to the ring or barrel 31 in such a manner that they may turn thereon. But in order to get the best results a spring is employed to normally hold these parts in the proper position for work. This spring is located around the reduced end of the shaft 30, see Figs. 9 and 10, and is held in position by means of a plate 43 which is secured in place by means of the thumb screw 42. The spring is designated 4:5 and has one end connected to a stud or pin 4-41: projecting from one of the plates 29 and the other end is connected with a stud or pin 46 projecting from the shaft 30 alongside of its reduced end. The drum or barrel 31 has two cut-away portions 31, as illustrated in dotted lines in Fig. 10, and two pins or screws designated by the numerals 47 work within these cut-away portions and limit the movement of the plates 29 on the shaft 30. It follows from this that during the rotation of shaft 30 the first roller (1 is brought into contact with the tooth of the saw which is being swaged and instead of striking the tooth and performing its work immediately, the spring 44 permits the plates 29 holding the roller to have a retarded action while the shaft continues to rotate, this action continuing for the length of the cutaway portions 31 just referred to. Shaft 30 continues to rotate and when the pins come to the ends of the slots the roller performs its work of rolling over the tooth, after which the spring will tend to unwind causing the plates 29 to have a suddenly accelerated movement bringing the next roller up to the tooth being swaged, when the operation is repeated for each of the following swaging devices I), 0 and (Z. 7

Although I have to some slight extent set forth the operation of the various parts of my invention in describing the various fea tures, it may yet be best to describe the operation in detail. The operator first turns the locking handles 34 and releases the face plate 83 so that he may move this slightly horizontally and then lower it vertically until it and its connected clamp 19 is removed from the machine. Assuming that it is necessary to swage the tooth of a band saw, the operator then places the band saw upon the supports 5, as illustrated in Fig. 3, and turns the buttons 5 to the positions shown in Fig. 1. If the machine has not been adjusted for this particular size of saw, the carrie 5 may now be vertically adjusted by hooking the pin 6 in the appropriate slot -25, and fine adjustment may be made by means of the crank handle 28 so that the saw is raised until the point of its teeth just touch the swaging rollers. The feed rod 18 may be adjusted for the proper length of feed according to the length of teeth by means of the adjusting holes 15 and by means of the thumb nut 13. The face plate may then be put back upon the machine and tightened in position by means of the handles 34L. The machine is now ready for operation and the main shaft 30 is started in its rotation; and the rotation of the cam 35 bringsits tail against the cam roller 011 the cam lever 2e and thereby moves the rod 2& to clamp the'saw between the clamps 19 and 19 Continuing rotation of the main shaft 30 then'brings the rollers 64, b, c and d successively into operation upon the saw tooth, which is during thisv rotation, supported upon the anvil-shaped end of the feed rod 18. After these rollers successively swage the tooth to the proper shape, the shaft 30 and its cams continue their rotation and at the point where the roller 9'of the cam lever 8 is permitted to drop oif of its cam, the weight 16 draws the upright 15 and its feed bar 18 to the left in Fig. 1, thus causing thefeed rod 18 to slip over the next successive toot-h, the saw being in the meantime, still clamped by the clamps 19 and 19 so that the anvil-shaped end of the feed bar 18 may easily be pushed away from the tooth without pulling the saw tooth with it. The continuous rotation of the shaft causes the companion cam 35 to drop its cam roller so that the lever 24 may move to the left as shown in Fig. 2, thus permitting the clamp 19 to move slightly to the left and release the saw from between the clamps 19 and 19 The further movement of the shaft 30 now bringsthe cam 32 to the point where 'it causes the cam roller 9 to move up to the highest point of the cam,'thus causing the cam lever 8 to move the rod 10 ,(see Fig.1) and acting on the upright 15 through the rod 10 causing the feed. arm 18 to move the next saw tooth in position under the swaging head, it being understood that the saw is now free since the clamps were released. By the time this has been accomplished, the tail of the cam' 35 rides against its cam roller and-this roller with its cam lever 24 is moved to give lateral movement to the saw clamp 19 so that the saw will be again clamped on the anvil-shaped end of the feed arm 18 ready for the swaging action of the rollers a, 7), 0 and (Z. It will, of course, be understood that this operation is repeated for each tooth of the saw until all the teeth are properly swaged, when the face plate 33 may be unlocked from position and removed from the machine, the saw moved and a new saw placed in position.

It Wlll be understood that my 1nvent1on 1s shown in its preferable embodiment and that changes and modifications maybe made without departing from the spirit of my invention, the scope of which may be seen from the appended claims; r

hat I claim as new is: '1. In a swaging machine, a swaging head,

a rolling swaging device and means sup ported by said head for carrying said swaging device, said means and said device having a slight circumferential movement independent of said head as the latter operates.

2. In a swaging machine, a swaging head, a rolling swaging device, means supported by said head for carrying said swaging device, said means and said device having slight circumferential movement independent of said head as the latter operates, and a spring normally holding said head and said swaging device in operativeposition and arranged to permit said slight circumferential movement.

3. In a swaging machine, a swaging head, a plurality of swaging rolls and means supported by said head for carrying said swaging rolls, said rolls having graduated circular surfaces, said means and said rollshaving a slight circumferential movement independent of said head as the latter rotates,

and a spring connecting said head and said supporting means whereby said supporting means and its rolls are given an accelerated movement after each of said rolls performs its work.

at. In a swaging machine, 'a swaging head, swaging means carried thereby, and side plates for holding said swaging means in position, said side plates and said swaging means having a slight circumferential movement independent of said head as thelatter operates. r t

- 5. In a swaging machine, a swaging head, a swaging ball carried by said head, plates having portions underturned to retain said ball in position, and saidplates and said ball having limited circumferential move ment independent of said swaging headas the latter operates. f

6. In a swaging machine, the combination of a tool-supporting device, a swaging head in working proximity'thereto, rolling swaging devices and means supported by said head for carrying said swaging devices, said means and said swaging devices successively having limited circumferential movementwith respect to saidhead whereby as they successively roll against the tool, the

swaging devices vare permitted to SL1CCS' sively lag behind the head and then roll over the tool. r

7. In a swag ng ma'chme, the comblnation of a rotary swaginghead, rolling swaging means and means supported by said head lfor carrying said swaging devices, said means and said swaging means having limited circumferential movement with respectto said head whereby as they roll against the tool, the swaging means are permitted to lag behiiid the head and then roll over the tool, and a spring cooperating with said means to cause the swaging means to have accelerated movement in the direction of the rotation of the head immediately after swaging the tool.

8. In a swaging machine, a swaging head comprising rolling swaging means and means for holding the same in position, and a spring coacting with the head proper and with the means for holding the swaging means, said spring permitting the holding means and swaging means to have movement independent of the head proper as the swaging means roll against the tool.

9. In a swaging machine, the combination of a swaging head carrying a swaging memher, a shaft carrying said head, a tool clamping member, a clamping member, and a cam operated by said shaft for periodically operating one of said clamping members.

10. In a swaging machine, an adjustable tool support comprising a vertically movable support and an adjusting device for raising and lowering said support, said device comprising a bar having hooks and coacting elements on one side for rapid adjustment and a threaded member and coacting element on the other side for slow adjustment.

11. In a swaging machine, a support for the tool having vertical adjustment with relation to the frame of the machine, a horizontal support under said tool support, a bar havin hooks and coacting elements at one side of said horizontal support for rapid adjustment thereof, a stirrup at the other end of said horizontal support, and a threaded rod and coacting element for delicate adjustment of said stirrup and said horizontal support.

12. In a swaging machine, the combination of a swaging head, a pair of clamping jaws arranged to clamp the saw from opposite sides in working relation to said head, one

' of said jaws being supported by the main frame of the machine, a face plate carrying the other jaw and having open ended slots, and means supported by the main frame coacting with said slots to secure said face plate and whereby said face plate and its clamping jaw may be removed to place another saw in working relation to said work: ing head.

13. In a swaging machine, the combination of a swaging head, a pair of clamping jaws arranged to clamp the saw from opposite sides in working relation to said head, one of said jaws being supported by the main frame of the machine, a face plate carrying the other jaw and having an open ended slotthrough which part of the swaging head projects and open ended securing slots, and means supported 'by the main frame coacting with said securing slots to secure said face plate, the several slots permitting the face plate and its clamping jaw to be removed to place another saw in working relation to said working head.

14. In a swaging machine, the combination of a swaging device, and a feed rod coacting therewith having a recess contracted at its mouth and enlarged inwardly, the said recess determining the depth to which the tooth is to be swaged.

Signed by me at Providence, Rhode Island, this 30th day of July, 1907.

WILLIAM LANDON COVEL. Vitnesses CHARLES M. PIKE, WM. J. BRAITSCH. 7, 

